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Beam IQS 3700A

Beam IQS 3900A
Power unit


  • Waterlift: 140
  • Airwatts: 640
  • CFM: 126
  • Amps: 15.0
  • Voltage: 120

Beam IQS 3900A

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Beam IQS 3900A Central Vacuum:

The Beam Serenity IQS utilizes the best of the Beam Serenity QS with added intelligence. The bright blue liquid crystal display (LCD) provides real-time information on system performance.

  • LCD display that provides real-time information
  • Quiet Pak™ Sound Insulation
  • Built-in Utility Inlet
  • Programmable Logic Controller

Electrolux PU3900C


Beam IQS 3900A

Authorized Beam Dealers are only allowed to ship Beam products within 100 mile radius of their location. Beam is a registered trademark of Electrolux Home Care Products Ltd. Thinkvacuums.com is not a licensed dealer nor affiliated with Beam products, however we offer compatible replacement tools and accessories for your Beam unit.
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Beam IQS 3900A Central Vacuum

Many vacuum cleaner manufacturers have discovered that in the vacuuming industry success also has to do with the inspiration to create innovative appliances. Each manufacturer stands out through a number of particularities and Beam makes no exception. One of the innovations this manufacturer is associated with is the intelligent information system installed on the Serenity IQS series of vacuum cleaners which the Beam Serenity IQS 3900A central vacuum cleaner belongs to.

Basically, the Serenity IQS series is the extra-intelligent version of the Serenity QS series promoted by the same manufacturer. The difference is made mainly by the smart information system which helps the user by providing real-time feedback on the performance of the appliance. Until now, Beam’s reputation was centered on the quietness of their vacuum cleaners, but now it is this real-time information system which puts Beam’s Serenity vacuum cleaners in the spotlight. The bright blue LCD display provides a vast array of information, from the temperature or run time of the system to its efficiency index. There are direct receptacle status, airflow level, motor and electrical system, service and system run time indicators, among others. In fact, the user can check out the overall performance of their Serenity IQS 3900 central vacuum cleaner by scrolling through the System Checks menu, a smiley face being displayed whenever optimal levels are achieved.

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The features this vacuum cleaner has are very clear indicators of its value and quality, many of them being found only within the Serenity IQS series. One of these features is the Quiet Pak sound insulation, which keeps the noise levels to the lowest. There is also the permanent self-cleaning filter made by the same people who introduced the Gore Tex fabric which is accompanied by an anti-microbial dirt receptacle able to collect up to seven gallons of dirt. The AlphaSan anti-microbial agent is a precaution taken against the formation of bacteria and mold. The list is completed by a built-in utility inlet, an anti-vibration mounting system and a programmable logic controller, all characteristic of the Serenity IQS vacuum cleaners.

Additional Information Regarding the Beam IQS 3900 Central Vacuum

The specifications of the Serenity IQS central vacuum cleaner set it forth when it comes to surfaces of up to 12,000 square feet. With 126 CFM of airflow, a suction power of 137 inches, 640 air watts produced and a voltage of 120 V, this vacuum cleaner is ideal for such rather complex and demanding cleaning jobs. However, the motor and all the other parts of the appliance are warranted for ten years.

All in all, the Beam Serenity IQS 3900A central vacuum cleaner may not impress through its dimensions, which are quite small (14 inches in diameter and 42 inches in height), or weight, the shipping weight being of 41 pounds and the dimensional one being of 74 pounds, but it impresses through its smarts and innovative features. Everything from the LCD display to the sound insulation system points out just how valuable, efficient and well-performing this vacuum cleaner is.

Care and Maintenance for the Beam Serenity IQS 3900

Your Beam Built-in Vacuum comes with a lifetime limited warranty (see complete warranty details elsewhere in this pamphlet). It will give you a lifetime of trouble-free service by following some simple guidelines:

  • Motor never needs lubrication. Bearings are permanently sealed and lubricated.
  • Motor brushes should be checked by your authorized Beam dealer after 500 hours of use.
  • Power unit can be dusted off with a clean, soft cloth. Caution: do not use liquid cleaners or water as an electrical shock may occur.
  • The Beam IQS 3900 is not to be tamperd with. Do not place anything on top of power unit as this could restrict cooling air to the motor, causing the motor to overheat.
  • Do not attempt to pick up anything that will not go through the cleaning tool or hose end. Do not use the system to pick up construction debris.
  • Do not attach anything else to the system’s electrical power source. Be sure that a properlysized protected circuit is used for your unit’s electrical requirements. Consult your authorized Beam dealer for the correct size
  • After removing the hose from the inlet, hold the inlet door open for a few seconds to help clear dirt from the vacuum tubing and make sure the power unit has been turned off.
  • To ensure proper cleaning, use only one inlet at a time.
  • If service is ever required, have it performed by your authorized Beam dealer.

Filter maintenance for the Beam Serenity IQS 3900

Beam’s exclusive filter is permanent and selfcleaning. However, if cleaning is desired, just follow these five easy steps:

  1. Remove the dirt receptacle.
  2. Wrap a large plastic trash bag around the lower portion of the power unit, holding it firmly in place.
  3. Grasp the sewn-in weight at the bottom of the filter through the bag (as shown) Shake vigorously Dirt will
    drop into bag.
  4. Carefully remove the plastic bag from the unit. Then empty the dirt receptacle into the bag, as well.
  5. place the dirt receptacle on the power unit. Remember, any dirt that is spilled can be easily vacuumed by attaching the hose to the utility inlet and activating the power unit with the manual switch.


With Beam, you can rest easy.


Lifetime limited warranty

The Beam power unit body and filter are warranted for as long as you own your home. Motor and electrical components are warranted for ten years on the Beam Serenity® QS and seven years on the Beam. Hoses, attachments and accessories are warranted for three years except for consumables such as light bulbs and belts. Ask your Beam dealer for complete warranty details.

Vacuum cleaners used for commercial purposes, except for their motors, will be warranted for a period of six (6) months from the date of purchase. The motors of commercially used upright vacuums will be warranted for one (1) year and the motors of all other commercially used vacuum cleaners will be warranted for two (2) years. Thereafter this Limited Warranty shall be null and void.

This warranty only applies while the product remains within the United States, and shall be null and void in any other US territories, possessions, or foreign countries.

90-day money-back guarantee

If you, the original purchaser, are not satisfied with the performance of your new Beam system within the first 90 days from the date of purchase, your dealer will remove the power unit and refund your money. The 90-day money-back guarantee applies to new and complete installations only.

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